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Hum sound ..is it me or is it you? LOUD hum in system

I sold a classe SSP-30 preamp 2nd week of April. worked fine. I played with it . zero noise at all.
sold it to get a simpler dedicated 2 channel preamp.

nearly two weeks after it was delivered I get an email saying that when the classe 30 is installed there is loud hum...but when its not there is no issue. 

that is all I am told..and "I want to send it back"

im kind of agitated that buyer took his sweet time to get around to checking it out or whatever.  Not sure what to do or what I can do. I told him to send it back so I can see it.

my question is, I read lots of info on grounding loops and funny noises .   because buyer claims he has noise does it leave me any other choice but to take it back?

I used the pre before I sold it for this exact type of reason.  i just didnt take video.   im not to pleased with the extra long delay neither. seems like if you spend that much money on something you check it out right away. it doesnt take a lot to hook up a preamp.

i find it hard to believe a preamp of this caliber would even have ground issues.

I dont know what to do. I feel like I am at this guys mercy no matter what?
gentlejax
stringreen's avatar
stringreen
6,435 posts
 
refridgerators and/or tv's are often the culprits.  They really send noise into the electric lines/ether.
gentlejax OP
40 posts
 
its already on its way back.  imo buyer should have checked it out much sooner.  I sent him some info because I thought it could be something in his system or I thought the unit was maybe picking up some noise that wasnt in the unit itself.  but he didnt read it just sent it back.

so yes now I am waiting for it to arrive so I can check it out.
toddverrone's avatar
toddverrone
840 posts
 
Ugh. That's rubbish. I feel like you're going beyond what you should. Used stuff is sold as is.. and the long delay before telling you about the problem is suspect.

Good luck.
dweller's avatar
dweller
3,779 posts
 
In my world, two weeks is not a long time to install a new component. Two months? Yes. Next time, specify that buyer should accept/reject within a week, or whatever. BTW, I have my own hum problems that the sellers swears didn't exist when he shipped. 
gentlejax OP
40 posts
 
buyer is now taking his sweet time getting the package to Fed Ex while I am  over here chomping at the bit to get it back and hook it up again.,

very rude to email one day and demand a refund....ignore the possible cause of  the hum in the info I gave and then delay shipping. 

taking longer for  this guy to get it back then it took for me to send it. 

I imagine he will be very impatient about his refund...'


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